LXR linux-old/include/asm-x86

   1/*
   2 *  asm-x86_64/acpi.h
   3 *
   4 *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
   5 *  Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
   6  *
   7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8 *
   9 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22 *
  23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  24 */
  25
  26#ifndef _ASM_ACPI_H
  27#define _ASM_ACPI_H
  28
  29#ifdef __KERNEL__
  30
  31#define COMPILER_DEPENDENT_INT64   long long
  32#define COMPILER_DEPENDENT_UINT64  unsigned long long
  33
  34/*
  35 * Calling conventions:
  36 *
  37 * ACPI_SYSTEM_XFACE        - Interfaces to host OS (handlers, threads)
  38 * ACPI_EXTERNAL_XFACE      - External ACPI interfaces 
  39 * ACPI_INTERNAL_XFACE      - Internal ACPI interfaces
  40 * ACPI_INTERNAL_VAR_XFACE  - Internal variable-parameter list interfaces
  41 */
  42#define ACPI_SYSTEM_XFACE
  43#define ACPI_EXTERNAL_XFACE
  44#define ACPI_INTERNAL_XFACE
  45#define ACPI_INTERNAL_VAR_XFACE
  46
  47/* Asm macros */
  48
  49#define ACPI_ASM_MACROS
  50#define BREAKPOINT3
  51#define ACPI_DISABLE_IRQS() __cli()
  52#define ACPI_ENABLE_IRQS()  __sti()
  53#define ACPI_FLUSH_CPU_CACHE()  wbinvd()
  54
  55static inline int
  56__acpi_acquire_global_lock (unsigned int *lock)
  57{
  58        unsigned int old, new, val;
  59        do {
  60                old = *lock;
  61                new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
  62                val = cmpxchg(lock, old, new);
  63        } while (unlikely (val != old));
  64        return (new < 3) ? -1 : 0;
  65}
  66
  67static inline int
  68__acpi_release_global_lock (unsigned int *lock)
  69{
  70        unsigned int old, new, val;
  71        do {
  72                old = *lock;
  73                new = old & ~0x3;
  74                val = cmpxchg(lock, old, new);
  75        } while (unlikely (val != old));
  76        return old & 0x1;
  77}
  78
  79#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
  80        ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
  81
  82#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
  83        ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
  84
  85/*
  86 * Math helper asm macros
  87 */
  88#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
  89        asm("divl %2;"        \
  90        :"=a"(q32), "=d"(r32) \
  91        :"r"(d32),            \
  92        "0"(n_lo), "1"(n_hi))
  93
  94#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
  95    asm("shrl   $1,%2;"             \
  96        "rcrl   $1,%3;"             \
  97        :"=r"(n_hi), "=r"(n_lo)     \
  98        :"0"(n_hi), "1"(n_lo))
  99#ifdef CONFIG_ACPI_PCI
 100extern int acpi_noirq;
 101extern int acpi_pci_disabled;
 102static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
 103static inline void acpi_disable_pci(void) 
 104{
 105        acpi_pci_disabled = 1; 
 106        acpi_noirq_set();
 107}
 108extern int acpi_irq_balance_set(char *str);
 109#else
 110static inline void acpi_noirq_set(void) { }
 111static inline void acpi_disable_pci(void) { acpi_noirq_set(); }
 112static inline int acpi_irq_balance_set(char *str) { return 0; }
 113#endif
 114
 115#ifdef CONFIG_ACPI_BOOT 
 116extern int acpi_lapic;
 117extern int acpi_ioapic;
 118extern int acpi_strict;
 119extern int acpi_disabled;
 120extern int acpi_ht;
 121extern int acpi_skip_timer_override;
 122static inline void disable_acpi(void) 
 123{ 
 124        acpi_disabled = 1;
 125        acpi_ht = 0;
 126        acpi_disable_pci();
 127}
 128
 129/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
 130#define FIX_ACPI_PAGES 4
 131
 132#else   /* !CONFIG_ACPI_BOOT */
 133#define acpi_lapic 0
 134#define acpi_ioapic 0
 135#endif  /* !CONFIG_ACPI_BOOT */
 136
 137
 138#ifdef CONFIG_ACPI_SLEEP
 139
 140/* routines for saving/restoring kernel state */
 141extern int acpi_save_state_mem(void);
 142extern int acpi_save_state_disk(void);
 143extern void acpi_restore_state_mem(void);
 144
 145extern unsigned long acpi_wakeup_address;
 146
 147/* early initialization routine */
 148extern void acpi_reserve_bootmem(void);
 149
 150#endif /*CONFIG_ACPI_SLEEP*/
 151
 152#define boot_cpu_physical_apicid boot_cpu_id
 153
 154#endif /*__KERNEL__*/
 155
 156#endif /*_ASM_ACPI_H*/
 157